conv_encoding(OnigEncoding from, OnigEncoding to, const UChar* s, const UChar* end,
UChar** conv, UChar** conv_end)
{
- int len = end - s;
+ int len = (int )(end - s);
if (to == ONIG_ENCODING_UTF16_BE) {
if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) {